A federal judge ruled over the weekend that state Sen. Owen Hill and a group of fellow Republicans won't be allowed to intervene in a lawsuit filed by U.S. Rep. Doug Lamborn in the six-term GOP incumbent's bid to get back on the primary ballot after the Colorado Supreme Court removed him. It's the latest twist in an evolving courtroom fight that has lasted most of the month over whether Lamborn turned in enough petition signatures to qualify for the June primary. Attorneys for Hill, one of four Republicans running to oust Lamborn in the primary, and the other Republicans said they filed a motion late Sunday asking the U.S.